Diurnal, monthly, and seasonal variations of indoor radon concentrations concerning meteorological parameters

Abstract Indoor radon concentrations and meteorological parameters were measured in an office of the teaching staff at the Institute of Nuclear Sciences, Ege University. Data were collected hourly over 25 months (762 days). Raw data, diurnal, monthly, and seasonal variation of parameters were investigated separately. The results show that the average indoor radon concentration (18 Bq m− 3) is relatively lower than national and international reference values. Indoor radon concentrations showed an increasing and decreasing trend throughout the day. Radon concentrations are slightly higher in the morning (downtime and early hours of the day) and then reduced in the afternoon. This can be related to the daily routine usage of the office, which is affected by ventilation of the room, air temperature variations, etc.